tính 685 - 156
Giải thích
\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{685}\\{156}\end{array}} \\\,\,\,\,529\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{272}\\{227}\end{array}} \\\,\,\,\,\,\,\,45\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{455}\\{270}\end{array}} \\\,\,\,\,185\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{603}\\{\,\,\,33}\end{array}} \\\,\,\,\,570\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{261}\\{\,\,\,14}\end{array}} \\\,\,\,\,247\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{513}\\{183}\end{array}} \\\,\,\,\,330\end{array}\) |